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(No Model.) 1 2 Sheets-Sheet 1.

D. S. DOYLE. DENTAL OUSPIDOR.

I No. 595,533. Patented D55. 14, 1897.;

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(No ModeL) 2 Sheets-Sheet 2. D. S. DOYLE. DENTAL UU$PIDOR.

155595533. Patented D55. 14, 1897.

fihiiiiiiiiiiim Witnmom UNITED STATES- PATENT Fries,

DENNIS S. DOYLE, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO WILLIAM W. DOYLE, OF SAME PLACE.

DENTAL CUSPIDOR.

SPECIFICATION forming part of Letters Patent No. 595,533, dated December 14, 1897.

Application filed May 10, 1897. Serial No. 635,907. (No model.)

To all whom it may concern:

Be it known that I, DENNIS S. DOYLE, a citizen of the United States, residing at Phi1a delphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and usefullmprovements in Dental Ouspidors and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in. the art to which it appertains to make and use the same.

My invention relates to certain new and useful improvements in cuspidors for dental use, and is particularly designed for those employed in dental hospitals where the available space for the location of the cuspidors is necessarily limited and where it is desirable that the apparatus should be capable of quick manipulation in view of the large number of patients operated upon within a short time.

In the accompanying drawings, Figure 1 represents in elevation an apparatus embodying my invention. Fig. 2 represents a central vertical section thereof. Fig. 3 represents a top plan view. Fig. 3? represents an elevation of the cotton-catcher. Fig. 4 represents an elevation at right angles to Fig. 1 and shows the attached tool-shelf. Figs. 5, 6, 7, and 8 represent, respectively, sections upon the lines 5 5, 6 6, 7 7, and 8 8.

Similar letters of reference indicate similar parts throughout the several views.

Referring to the drawings, A indicates the cuspidor-bowl, provided with the rim to and supplied with water by the tube or pipe I). The bowl is likewise provided with a tubular extension 0, and said tube 0 and the tube 19 extend downwardly into the tubular chambers e and d of a pipe B, within which the tubes 0 and b are capable of being adjusted up and down, so as to change the height of the bowl A as desired. In order to do this quickly and without racking or unduly strain: ing the apparatus, I find it desirable to employ a rack on, passing through suitable guides and connected at its upper end to a collar 1), which is clamped to the bottom of the bowl and to the tube b, so that as the rack is moved up or down it carries the bowl and its tubes 17 and o with it. To actuate the rack, I provide a cog or pinion 01, mounted in suitable bearings, as shown, and having a shaft 6 and operating-handle f.

Upon the opposite side to the pinion d there is located a guide-rod g, secured in place by lugs h. The purpose of this rod is to steady and guide the frame of the tool-shelf R, said frame consisting of the triangular bracket is, having a lug m, which slides upon the guiderod g, and a projection or, connected to the collar 1). It also relieves the collar of a portion of the weight of the tool-shelf and renders the operation of the rack and pinion easier because of the consequent lessened tendency for the tubes 1) and c to bind within the compartments e and d.

At the lower end the pipe-section B merges into a pipe-section E, having two chambers or compartments separated from each other by a partition K. One of these compartments communicates at its base with an inlet-pipe Z for fresh water through the intermediacy of an annular channel f in the enlarged end of the pipe-section E, and the other discharges through the'pipe or into the usual drain-pipe and trap. stability to the structure, the lower end G of the pipe E is received within a hollow standard S and is held securely therein by a water-tight packing and screw-cap c It will be observed that the construction of the standard S and the relation of the pipe E thereto enable the pipe E to be securely clamped in place in a water-tight manner and yet with ready facility forremoval or for tightening the packing without in any way disturbing the standard itself. Thus upon an internal shoulder of the standard S rests the packing-ring n, and upon a flange of the end G rest the packin g-rin gs 07/11 so that by screwing down the cap 6 the pipe E is clamped in place and the joint made watertight. To disassemble the parts, it is merely necessary to unscrew the cap 6 whereupon the pipe E may be removed, leaving the standard in place. For purposes of absolute security against leakage I prefer to employ all three of the packing-rings or washers referred to, but in some instances a single washer will be sufficient. L

In order to prevent cotton from passing In order to give entire down into the drain-trap or otherwise clogging the apparatus, I provide a perforated cotton-catcher 5, adapted to be inserted into the waste-pipe, as shown, and having a bail or handle ,2, whereby it may be readily removed as occasion may require.

It will of course be apparent that a continuous fiow of fresh water is obtained in the apparatus when in use, so that the bowl is constantly flushed and the waste water as continuously carried away.

Having thus described my invention, what I claim is 1. Dental cuspidor apparatus, consisting of a standard, a double conduit supported by said standard, an inlet-pipe for one division of the conduit, an exit-pipe for the other division of the conduit, and a bowl having depending tubes or pipes telescopically arranged within the upper portions of said divisions; substantially as described.

2. Dental cuspidor apparatus, consisting of a standard, a double conduit supported by said standard, an inlet-pipe for one division of the conduit, an exit-pipe for the other division of the conduit,a bowl having depending tubes or pipes telescopically arranged within the upper portions of said divisions, and gearing for positively raising or lowering the bowl; substantially as described.

3. The combination with a dental cuspidorbowl having an exit or waste pipe, and a watersupply inlet-pipe, of a double conduit in which said pipes fit and in which they are vertically movable and adjustable, a rack connected to the bowl, and a pinion for operating the rack; substantially as described.

4. The combination with a dental cuspidorbowl having an exit or waste pipe, and a water-supply inlet-pipe, of a double conduit in which said pipes fit and in which they are vertically movable and adjustable, a rack connected to the bowl, a pinion for operating the rack, and a tool-shelf attach ed to the bowl and moving with it; substantially as described.

5. The combination with a dental cuspidorbowl having an exit or waste pipe, and a water-supply inlet-pipe, of a double conduit in which said pipes fit and in which they are vertically movable and adjustable, a rack connected to the bowl, a pinion for operating the rack, a tool-shelf attached to the bowl and moving with it, and a guide-rod upon which the tool-shelf bracket is in part supported.

6. The combination with the standard, of the pipe having an enlarged end fitting with the standard, said enlarged end having an annular channel,a water inlet-pipe co1nmunieating with said channel through the side of the standard, a screw-cap, and packing between the screw-cap and said enlarged end; substantially as described.

7. The combination with the standard having an internal shoulder, of packing resting upon said shoulder, the pipe having an enlarged end resting upon said packing, said enlarged end having an annular channel, a water inlet -pipe communicating with said channel through the side of the standard, a screw-cap, and packingbetween the screwcap and said enlarged end; substantially as described.

In testimony whereof I affix my signature in presence of two witnesses.

DENNIS S. DOYLE.

\Vitnesses:

JOHN A. BRADLEY, WILLIAM W. DOYLE. 

